The oldest channel Amu Darya

Kaulbars, Alexander Vasilyevich (1844-1929).The ancient channel Amu Darya / [cit.] Of action.CHLA.V.Caulbars.- St. Petersburg: Type.Imp.Acad.Sciences, 1887. - [4], 133 p., 4 liters.Il., cards.;23. - (Notes of the Russian Geographical Society, according to general geography; T. 17, No. 4. Ed. Ed. I.V. Musketova).Electronic Source: PB